<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<!--13.文件域
表单，需要支持提交复杂文件  enctype="multipart/form-data"
未来：文件上传会用到
-->
<form action="test.html" method="get" enctype="multipart/form-data">
    <input type="file" name="video">
</form>

</body>
</html>